Unlock 30% off on Manual Testing Annual Plans this Holiday Season.

Copied to Clipboard!

How to use _attach_img_loop method in autotest

Best Python code snippet using autotest_python

partition.py

Source:partition.py

...666            raise error.AutotestError(e_msg)667        logging.debug('Creating virtual partition')668        self.size = file_size669        self.img = self._create_disk_img(file_img)670        self.loop = self._attach_img_loop()671        self.device = self.loop672        logging.debug('Virtual partition successfuly created')673        logging.debug('Image disk: %s', self.img)674        logging.debug('Loopback device: %s', self.loop)675        logging.debug('Device path: %s', self.device)676    def destroy(self):677        """678        Removes the virtual partition from /dev/mapper, detaches the image file679        from the loopback device and removes the image file.680        """681        logging.debug('Removing virtual partition - device %s', self.device)682        self._detach_img_loop()683        self._remove_disk_img()684    def _create_disk_img(self, img_path):685        """686        Creates a disk image using dd.687        @param img_path: Path to the desired image file.688        @param size: Size of the desired image in MB.689        @returns: Path of the image created.690        """691        logging.debug('Creating disk image %s, size = %d MB',692                      img_path, self.size)693        try:694            cmd = 'truncate %s --size %dM' % (img_path, self.size)695            utils.run(cmd)696        except error.CmdError, e:697            e_msg = 'Error creating disk image %s: %s' % (img_path, e)698            raise error.AutotestError(e_msg)699        return img_path700    def _attach_img_loop(self):701        """702        Attaches a file image to a loopback device using losetup.703        @returns: Path of the loopback device associated.704        """705        logging.debug('Attaching image %s to a loop device', self.img)706        try:707            cmd = 'losetup -f'708            loop_path = utils.system_output(cmd)709            cmd = 'losetup -f %s' % self.img710            utils.run(cmd)711        except error.CmdError, e:712            e_msg = ('Error attaching image %s to a loop device: %s' %713                     (self.img, e))714            raise error.AutotestError(e_msg)...

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.